Interesting concept, but can you provide more information on the background of why you suggest this strategy; for example, i've always held in the content network you should never delete ads, only disable them; and why is using 'optimize' vs. 'rotate' beneficial in this case?

it really very interesting. I was always facing problem with my ads in content networks but now this information will help me to test my ads in content network. it would be more helpful if you post something in more detail. very nice post.